baber/WOPTO huggingface dataset:
Patent GB-220644-A (GB)
Title: Improved roofing material
IPC: E04D5/10
Filed: 1924-08-15
Abstract: 220,644. International Copperclad Co., (Assignees of Robinson, T.). Aug. 15, 1923, [Convention date]. Sheet-metal tiles.-A flexible sheet roofing material consists of a composition base 19, Fig. 1, combined with a strip 22 of thin non-corrodible sheet metal such as copper or zinc and of less width than the base. The base may consist of paper, felt, or burlap impregnated with bituminous magnesite, or like composition, or asbestos or other fibrous or granular material and a binder; the metal is preferably copper applied as a sheet or deposited electrolytically. The roofing material is secured by nails inserted in selvages 20, 21. For hips and ridges, a length is cut down the centre 28, Fig. 6, and then divided on lines 29 into sections which are bent as shown in Fig. 7 and laid to overlap; or, to avoid cutting, the length is bent along the centre and the selvages are either left projecting or folded underneath. Valleys are covered in a similar manner. For eaves, the starting course or flashing consists of a half strip 44, Fig. 14, the other covering consisting of composition sheets with cuts to represent separate tiles. The main body of the roofing and flashing strips for angles may consist of the compound sheets described above. Specification 220,646 is referred to.
Patent GB-1547817-A (GB)
Title: Directionally solidfied eutetic alloy articles and methods of producing such articles
IPC: C30B21/02
Filed: 1976-05-11
Abstract: Directionally solidified casting products, in particular for high mechanical and thermal stresses as in the case of gas turbine blades, have a high strength and a preferential direction determined by the direction of solidification, but a comparatively low toughness and ductility such as is required for certain zones of highly stressed workpieces, for example in blade roots. For this purpose, the product has, in addition to a part with a completely oriented fibrous microstructure, at least one part with a cellular microstructure and a correspondingly high toughness and ductility. For this purpose, the process envisages a corresponding alternation between the solidification conditions corresponding to the directional solidification and those corresponding to the cellular microstructure.
Patent GB-614018-A (GB)
Title: Improvements relating to the water-solubility of phenyl-ª‰:ª†-dihydroxy-ethers
IPC: A61K47/18
Filed: 1946-06-28
Abstract: The percentage water solubility of phenyl-b  : g -dihydroxypropyl ether or nuclear substituted derivatives thereof is increased to about ten per cent by treatment with ethyl urea or propylene glycol. The ether may be mixed with the urea or glycol and then dissolved in water or dissolved straightway in an aqueous solution of either the urea or glycol.  Ethers instanced are:-phenyl-, p-chlorophenyl-, o-tolyl-b  g -dihydroxypropyl ethers and the propylene glycol is substantially 1 : 2-dihydroxypropane.  Other methods employed are (a) preparing a solution of the ether in warm aqueous propylene glycol and then allowing to cool; (b) heating the ether mixed with propylene glycol and then adding water; (c) heating the ether with a portion of the propylene glycol and subsequently adding the remainder of the glycol and water either together or first the glycol then the water; (d) heating the ether slightly above its melting point and then adding to the propylene glycol and subsequently adding water. The last two methods are preferred for large scale practice.  In Examples (1) and (2) o-tolyl- and p - chlorophenyl - b  : g  - dihydroxypropyl ethers are dissolved in aqueous solutions of varying strengths of ethyl urea and Examples (3), (4) and (5) illustrate the use of o-tolyl-b  : g -dihydroxypropyl ether in the above methods (a), (c) and (d).ALSO:The percentage water solubility of phenyl-b : #U-dihydroxypropyl ethers and nuclear substituted derivatives thereof such as p-chlorophenyl and o -tolyl-b : #U-dihydroxypropyl ethers is increased to about 10 per cent by treatment with ethyl urea or propylene glycol (essentially 1.2 dihydroxypropane [see Group IV (b)].  Solutions obtained show anti-bacterial properties exceeding those expected by a mere increase of solubility.
Patent GB-1381908-A (GB)
Title: Feed and injection water control for steam generators
IPC: F22G5/20
Filed: 1972-04-26
Abstract: 1381908 Steam generator control E PRITCHARD 26 April 1972 [30 April 1971] 19439/72 Heading F4A A steam generator control system comprises a steam generator 10, a burner 31, a coil 18 supplying superheated steam to a steam-powered apparatus 11, a water injection circuit 51 in parallel with a section of the coil 18 and including a valve and metering means, and a feedwater supply pump 16 arranged normally to supply feedwater at a rate less than the requirements of the generator but able to supply an increased flow when there is flow in the injection circuit, and a rotary motor 24 powered by exhaust steam and controlling the feedwater supply. Normally the feedwater is supplied by pump 16a, but when the temperature indicated by superheater thermostat 14 rises above a first level solenoid 43 is energized and water is supplied by a second pump 40; at the same time a valve in the circuit 51 is opened, unless thermostat 27 indicates overheating in the bypassed part of the coil. If thermostat 14 detects a temperature in excess of a second level, greater than the first level, or if switch 53 detects an excessive superheater steam pressure, than the burner is switched off. The motor 24 is bypassed by a valve, Fig. 6 (not shown), having a spring- biased piston (61) which allows passage of excess steam, so that the motor speed does not become excessive at high pressures. Or the motor may be retarded by motor/generator 56 which cuts in to act as a generator and thus impose a torque load, and which acts as a motor at start and at low speeds.
Patent GB-862448-A (GB)
Title: Improvements in or relating to thermionic valves
Inventor: WIDDOWSON ARTHUR EVERARD
IPC: H01J19/74
Filed: 1958-06-18
Abstract: 862,448. Thermionic valves. M-O VALVE CO. Ltd. June 15, 1959 [June 18, 1958], No. 19479/58. Class 39(1). In a thermionic valve of the kind including a cathode, having a planar electron-emissive surface 2, and a planar control grid 11 disposed parallel to and not more than 0.1 mm. from the emissive surface, the control grid and emissive surface are supported by a system which includes at least four parts joined together successively between the emissive surface and the grid, the arrangement being such that upon thermal expansion of the parts, the successive parts alternately tend to urge the emissive surface towards and away from the control grid whereby the clearance between the emissive surface and the grid, preferably about 0.025 mm., remains substantially constant despite any change in the ambient temperature or in the operating temperature of the cathode which may occur during operation of the valve. As shown, the support system comprises an impregnated, porous tungsten disc 3 and a molybdenum cup 4; a tube 15 of an alloy consisting by weight of 30% tungsten and 70% nickel; a nickel tube 18; and two annular members 21, 26 of an alloy consisting by weight of 42% nickel and 58% iron, a molybdenum shim 27 and a ceramic tube 23. The dimensions of the various parts are given. According to the Provisional Specification the valve is designed for insertion into two waveguides having a common wall. A foil of insulating material is wrapped round the cathode contact so that the contact foil and the metal tube, formed in the wall of the input waveguide, into which the contact is inserted, form a capacitive element which provides a radio frequency connection between the input waveguide and the valve while allowing a biasing potential to be applied to the grid.
Patent GB-351253-A (GB)
Title: Improvements in contacts for electric switches or circuit breakers
IPC: H01H1/16
Filed: 1930-06-26
Abstract: 351,253. Heavy-current switches. WHITEHEAD, G. E. and WHITEHEAD'S ELECTRICAL INVENTIONS, Ltd., 102, St. Mary Street, Cardiff. June 26, 1930, No. 19514. [Class 38 (v).] Contacts of heavy-current circuitbreakers such as are described in Specifications 337,056, [Class 38 (v), Electric switches &c.], and 350,529 comprise a spring-pressed arcing ball 7 located within a cage formed by one of the contacts so that when engaging the other main contact it is pressed inwards and when the contacts separate contact is finally broken at the surface of the easilyrenewable ball. In the arrangement shown, the ball is retained by an inner rim 6 and co-operates with a ball 4 fitting in the concave end 3 of the other main contact 2. The ball 4 first contacts with the ball 7 and finally beds against the spherically concave ends 3 of the contact 1.
Patent GB-820956-A (GB)
Title: Process for the production of non-dusting and non-caking fertilizers containing potassium salts
IPC: C05D1/00
Filed: 1956-06-25
Abstract: The moist potassium salt obtained by flotation and containing residual flotation agent which, in the parent Specification, is added to fine or dusty fertilizers to make them non-dusting, is replaced by a moist potassium salt obtained by dissolving and crystallisation processes to which has been added a flotation agent or a surface active agent.  In examples the non-dusting fertilizer is (1) 300 kg. of a mixture of ammonium sulphate and mitrate; 300 kg. of soft-earth crude phosphate; 400 kg. of treated potassium fertilizer salt, (2) 550 kg. of soft-earth crude phosphate; 500 kg. of treated potassium fertilizer salt, (3) 600 kg. Thomas phosphate; 350 kg. treated potassium fertilizer salt, (4) dried potassium fertilizer salt and sylvinite salt slurry treated after cooling.
Patent GB-1516964-A (GB)
Title: Poppet valve with recessed seat
IPC: A61K31/505
Filed: 1977-05-10
Abstract: 1516964 Engine poppet valves CATERPILLAR TRACTOR CO 10 May 1977 [16 Aug 1976] 19542/77 Heading F1B The periphery 28 of the valve head 24 is in close proximity to the wall of the surrounding bore 30 when engaged on the seat 16 so that the valve does not effectively open until the head seating surface 26 emerges from the bore. The head surface has an annular groove 40 or a groove (48), Fig. 3 (not shown), is defined between the head and an extended seat insert (42).
Patent GB-1361535-A (GB)
Title: Vehicle suspension systems
IPC: B60G21/073
Filed: 1972-04-27
Abstract: 1361535 Motor vehicle suspensions BRITISH LEYLAND (AUSTIN-MORRIS) Ltd 6 April 1973 [14 April 1972] 27 April 1972] 17377/72 and 19604/72 Heading B7D In an hydraulic or hydro-pneumatic suspension system including a separate sealed fluid conduit 3 interconnecting front and rear diaphragm type fluid displacer units 1, 2 on each side of a vehicle, a cylinder 4 containing a separating piston 5 centralized by light springs is interposed in each conduit 3 so that transfer of fluid between the units 1, 2 is limited by the extent to which the piston 5 can move in the cylinder with a consequent reduction in pitch attitude changes under load variations. The separating piston may be replaced by a diaphragm of elastomeric or plastics material, a metal diaphragm, or a rolling diaphragm.
Patent GB-596713-A (GB)
Title: Improvements in and relating to automatic milking systems
IPC: A01J5/04
Filed: 1945-07-31
Abstract: 596,713. Pneumatically controlled clutches. GASCOIGNES (READING), Ltd., and GASCOIGNE, G. H. July 31, 1945, No. 19662. [Class 80(ii)] [Also in Group I] A clutch-plate l for a pulley m is pressed against a gear wheel i rotated from a pulsator c of a cow-milking machine, by a spring o to move a pointer x for a dial z when the machine is milking, and a chamber ql is at atmospheric pressure. When milking is stopped, the chamber q<SP>1</SP> is exhausted, the clutch-plate l withdrawn, and a torsion spring v returns the pointer to zero.
Patent GB-335601-A (GB)
Title: Improved manufacture of metal articles
IPC: A47K3/02
Filed: 1929-06-27
Abstract: 335,601. Wade, H., (Steel Sanitary Co.). June 27, 1929. Hollow-ware.-In a method of manufacturing containers such as baths, sinks, stationary laundry tubs, kettles and the like, a piece 3 is stamped from a metal sheet 5 and the edges of the sheet 5 are turned over as at 4. The piece 3 removed is dished to form the bottom 6 of the container, and a number of sections are stamped from sheet metal to form the sides. The assembled pieces are welded at 16 and 17. The apron 7 may be stamped in the same operation and bent over and the tub provided with feet.
Patent GB-1177140-A (GB)
Title: Blanking Circuits for Television Receivers
IPC: H04N3/24
Filed: 1967-04-28
Abstract: 1,177,140. Cathode-ray tube circuits. RCA CORPORATION. 28 April, 1967 [19 May, 1966], No. 19823/67. Heading H4T. In. an arrangement for blanking the beam of a television picture tube, a pulse derived from the vertical deflection circuit during the retrace interval, preferably, as shown in Fig. 1, from the winding 38 of the vertical output transformer which supplies the deflection yoke, operates to reverse bias a rectifier 42 otherwise forwardly biased by the operating potential B+ for the video stage 10 and is thus developed across the load resistor 30 as a beam blanking pulse superimposed on the normal blanking pulse in the video signal. During the forward scan the rectifier, the loading of which on winding 38 is limited by resistor 48, operates in effect to clip the sawtooth portion of the deflection waveform. A reduction in yoke cross-talk, i.e. the effect of the horizontal deflection signal on the vertical deflection circuit, is stated to be reduced with a consequent improvement in the vertical interlace by the connection of winding 38 through the low impedance path via the B+ supply to earth. Any other winding on the vertical output transformer may be utilized as the source of the pulses supplied to the rectifier. In the case of electrostatic deflection additional means must be provided to derive such pulses.
Patent GB-866582-A (GB)
Title: Improvements in and relating to change speed reversing gearing employing epicyclic gear trains
Inventor: WILSON ANDREW GORDON
IPC: F16H47/08
Filed: 1958-06-20
Abstract: 866,582. Change-speed gear. SELF-CHANGING GEARS Ltd. June 19, 1959 [June 20, 1958], No. 19838/58. Class 80 (2). A change-speed and reverse. gear for a railcar or earth mover, providing three ratios in both forward and reverse directions, comprises a three-speed planet gear 40 in series behind an hydraulic torque converter or coupling 8 and a reverse planet gear 14, the planet trains being disposed around the output shaft 1 and controlled by selective engagement of friction brakes 29, 38, 51, 58 and a direct drive clutch 41. The reverse gear has two sun-ring planet trains in the first of which an input sun. 15 is driven through the torque converter 8 and a one-way clutch 20, whilst its planet-carrier 23 is connected to the ring 33 of the second train and to the drum of the reverse brake 29. The ring gear 17 of the first train and planet-carrier 27 of the second are fast with an intermediate output shaft 28 whilst the second sun 30 may be braked at 38. The first train acts alone on engagement of the brake 29 for reverse, and both trains are compounded on engagement of the brake 38 for reduced forward drive. The three-speed gear provides reduced, direct and overdrive ratios. The intermediate output shaft 28 of the preceding reverse gear forms the input member carrying the planets 43 of the front train, the sun 42 of which may be braked at 51 and is connected to the sun 53 of the rear train whilst the ring gear 45 of the front train and the planet carrier 54 of the rear are fast with the output shaft 1. Application of the brake 51 causes the front train to overdrive alone; applying the brake 58 to the ring gear 56 gives compounded reduced, whilst a clutch 41 between the ring gear 56 and output shaft 1 gives direct drive. The reverse brake 29 is of higher capacity than the other brakes and is of the overlap-type described in Specification 805,597. The direct drive clutch 41 is operated by fluidpressure at 68 acting through a crank 66 and thrust bearing 65 on the presser plate 62. A lubrication system, Fig. 2 (not shown), comprises a pump which draws oil from the sump and supplies it to the torque converter under pressure. The outflow from the converter passes through a filter, pressure control valve and heat-exchanger to the duct 79 (Fig. 1), to lubricate the gearing, a pressure relief valve 84 being provided.
Patent GB-269040-A (GB)
Title: Improvements in flexible coupling for shafting
IPC: F16D3/60
Filed: 1926-08-13
Abstract: 269,040. Naugler, W. E. Aug. 13, 1926. Universal joints allowing universal and axial movements. The driving and driven members 12, 13 are connected by rigidly-secured flat flexible members 18 - - 21, the median lines D D of the faces of which are longer than the distances between their ends, so that they yield to allow relative movements of the shaft 10, 11 solely by twisting. As shown, the members 18 - - 21 are crescent-shaped, of greatest width across the central section C C, and are secured, parallel to one another, by bolts 22, 23 to arms 14 - - 17 of the members 12, 13. The shape of the flexible members is preferably such that their centres of gravity lie in the shaft axes, whereby the bolts 22, 23 are not subjected to centrifugal shearing- forces.
Patent GB-531830-A (GB)
Title: Pile foundation supports and method of making same
IPC: E02D5/44
Filed: 1939-07-10
Abstract: 531,830. Piles. DEHN, F. B. (Union Metal Manufacturing Co.). July 10, 1939, No. 20075. [Class 68 (ii)] A pile consists of a rigid tapered metal tube 32 driven into the ground with its small end downward by a driving effort applied to its upper end, the tube being filled if desired with concrete. The upper edge may be stiffened by a band 33 to resist the blows of the hammer 35. The tube may be longitudinally ribbed. If the tube is not provided with a driving cap, the earth collected within it may be removed by air or water which may also serve to form at the lower end an enlarged cavity to receive concrete.
Patent GB-739581-A (GB)
Title: Improvements in magnetic friction devices
Inventor: ANDERSON NORMAN KENNETH
IPC: F16D27/06
Filed: 1954-07-09
Abstract: 739,581. Electromagnetic brakes. WARNER ELECTRIC BRAKE & CLUTCH CO. July 9, 1954, No. 20158/54. Class 103 (1). In a magnetic friction device comprising an annular magnet having concentric pole pieces or rings terminating in pole faces which together with an annular plate of friction material disposed between them form a composite friction face adapted for axial gripping engagement with a flat armature ring, the annular magnet is formed as two telescopically disposed units, i.e. a replaceable friction face unit and a permanent coil carrying unit, such that when wear of the friction face unit takes place, it can be replaced; thereby still utilizing the coil-carrying unit. Fig. 1 illustrates an embodiment of the invention applied to an electromagnetic friction brake which comprises a magnet 10 made up of two telescopically integrated units 24 and 25 which are releasably secured together by a plurality of screws 35. The friction face unit 24 comprises two concentric rings 28 and 29, rigidly connected but magnetically separated by a flat narrow ring of copper or other non-magnetic material, which form inner and outer pole pieces which terminate in pole faces 11 and 12 which have disposed between them an annular wear plate of friction material 17. The coilcarrying unit 25 is permanently secured to a plate 22 which is bolted to a fixed member 21. When the coil 15 is energized the magnetic flux path is illustrated by the broken line 23 and the armature 13 which is secured to but axially slidable on the rotatable shaft 20 is drawn into gripping engagement with the composite friction face 14 of the magnet. During service use of the brake, the pole faces 11 and 12 and the outer surface of the annular wear plate 17 which form the composite friction face 14 wear off and the friction face unit 24 may be replaced' by a new unit by removal of the screws 35. Provision is made for the dissipation of residual magnetism when the coil 15 is de-energized by the provision of a narrow gap 27a of non- magnetic material between the parts 26 and 27 of the coil-carrying unit 25.
Patent GB-293773-A (GB)
Title: Improvements in evaporators for refrigerating machines
IPC: F25B39/02
Filed: 1927-05-03
Abstract: 293,773. British Thomson-Houston Co., Ltd., (Assignees of Steenstrup, C.). May 18, 1926, [Convention date]. Divided on 271,437. refrigerating, compression machines for; cold accumulators. - A flat plate evaporator 3 for a domestic refrigerator having a compression machine on a removable cover 1 is fed with refrigerant through a pipe 36 connected to a float valve chamber 31, the refrigerant being returned to the compressor through a suction pipe 80 extending to the centre of the plate and formed with a goose-neck 81 with its open end in the vapour space and with holes 83 in the layer of lubricant floating on the refrigerant, whereby the lubricant. is slowly returned to the compressor. The plate is fitted with U-shaped partitions 86 forming closed spaces filled through side plugs 87 with a mixture of water and glycerine, brine or other liquid which alternately freezes and thaws and thus serves as a cold accumulating medium. The plate walls and partitions are formed of separate plates secured together, the joints being copper brazed by treatment of the whole in a hydrogen furnace. A thermostat 88 may be located in one of the brine &c. spaces and serves to control the driving-motor. The evaporator is suspended near the top of the refrigerator by bolts 76, Fig. 1, with spacing sleeves 77, and a pan 73 for ice-moulds may be placed on it.
Patent GB-1328002-A (GB)
Title: Frequency multiplex telecommunications systems
IPC: H04J1/08
Filed: 1971-04-19
Abstract: 1328002 Multiplex transmission SIEMENS AG 19 April 1971 [29 Jan 1970 (2)] 20284/71 Heading H4R In an arrangement for the transmission of videophone signals over multiplex telecommunications systems normally used for telephony the carriers which are used for multistage or single stage transposition of the videophone signals from video position to the transmission position are all multiples of a particular frequency; i.e. 4 KHz which is the frequency spacing of the telephone channels. As described the modulation system is as described in Specification 1,328,001 with the frequencies used in the initial conversion from the video position being an odd number multiple of 4 KHz and the carriers used for the subsequent conversions whole multiples of 8 KHz. The line scan frequency of the videophone system is 4 KHz or a multiple thereof, preferably 8 KHz.
Patent GB-1383860-A (GB)
Title: Hot gas engine power control systems
IPC: F02G1/05
Filed: 1973-04-28
Abstract: 1383860 Hot gas engines UNITED STIRLING SWEDEN AB & CO KB 28 April 1973 20329/73 Heading F1S The invention relates to a hot gas engine power control system comprising a supply reservoir 5 for suppling working gas via a valve controlled conduit 6 to at least one working chamber 1, 2, 3 or 4 of the engine and a compressor 12 for supplying working gas to the reservoir 5. The system includes a valve controlled short circuiting duct 16. According to the invention a receiver reservoir 18 is disposed between the short circuiting duct and the compressor inlet and is included in a valve controlled conduit 9 through which the working gas is supplied to the compressor. Preferably the receiver reservoir is adjacent to the compressor.